Quick and dirty hack to rename a batch of files on Windows using PowerShell.

fotos.ps1

function Select-Folder($message='Select a folder', $path = 0) { 
    $object = New-Object -comObject Shell.Application  
     
    $folder = $object.BrowseForFolder(0, $message, 0, $path) 
    if ($folder -ne $null) { 
        $folder.self.Path 
    } 
}

$Title = "Renomear Fotos Automaticamente";
$Info = "Escolha como você deseja reorganizar os nomes dos arquivos das fotos:"
 
$options = [System.Management.Automation.Host.ChoiceDescription[]] @("&Data Tirada", "&Numerar todas de 1 até N", "&Cancelar")
[int]$defaultchoice = 2

$opt =  $host.UI.PromptForChoice($Title , $Info , $Options, $defaultchoice)

$myPath = Select-Folder -m "Selecione a pasta que contem as fotos:";
if ( $myPath -eq $null ) { $opt = 2; }

switch($opt)
{
0 { Write-Host "-> Renomear por data" -ForegroundColor Blue;
   # Generate filenames based on the data the picture was taken
   
   $myPath = $myPath + "\";
   $objShell = New-Object -ComObject Shell.Application
   $objFolder = $objShell.namespace( $myPath )

   foreach( $File in $objFolder.items() ) {
     If ( $data = $objFolder.getDetailsOf( $File, 12 ) ) {
        # Great, we've got metadata
     } else {
        # No metadata :/ Use creation date
        $data = $objFolder.getDetailsOf( $File, 4 );
     };
  
      $time = $data.Split(" ")[1];
      $date2 = $data.Split(" ")[0];
     
      $hour = $time.Split(":")[0];
      $minute = $time.Split(":")[1];
     
      $day = $date2.Split("/")[0];
      $month = $date2.Split("/")[1];
      $year = $date2.Split("/")[2];
      $second = Get-Random -Minimum 0 -Maximum 60;
   
      if ( $second -lt 10 ) {
        $second = "0$second";
      };
   
      $3rand = Get-Random -Minimum 100 -Maximum 1000;
     
      $newname = "$year-$month-$day-$hour-$minute-$second-$3rand";
      $extension = $File.Path.replace( $myPath , '' ).replace( $File.Name, '' );
      $newname += $extension;
      Rename-Item $File.Path $newname;
      Write-Host $newname;
   }
   
   ii $myPath;

}
1 { Write-Host "-> Numerar de 1 até N" -ForegroundColor Blue;

   $prefix = Read-Host "Escreva um prefixo para o nome dos arquivos( Opcional ):";
   
   If ( $prefix -ne '' ) { $prefix = $prefix + '-' }; 

   $count = 1;
   $myPath = $myPath;
   
   ls "$myPath\*.*" | Sort-Object CreationTime | Foreach-Object { 
      $new_name = "$prefix$count" + $_.extension;
      Write-Host "$_ `t->`t`t $new_name";
      Rename-Item $_ $new_name; 
      $count++; 
    }
    
   ii $myPath;

}
2 { Write-Host "Ok, tchau!" -ForegroundColor Green}
}